Home / 20,186.43-27,854.96-11,688.72

Finding the Fourth Proportional to 20,186.43, 27,854.96 and 11,688.72

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Solution

The fourth proportional to 20,186.43, 27,854.96 and 11,688.72 is: 16,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.43 : 27,854.96 = 11,688.72 : x
  2. Step 2: Convert to fraction form
    20,186.43/27,854.96 = 11,688.72/x
  3. Step 3: Cross multiply
    20,186.43x = 27,854.96 × 11,688.72
  4. Step 4: Simplify right side
    20,186.43x = 325,588,769.61
  5. Step 5: Solve for x
    x = 325,588,769.61/20,186.43
  6. Step 6: Final answer
    x = 16,129.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.